Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 641 [Rate centres in NPA 641] [Dial plan for NPA 641]

NXX: 810

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-810 A Oskaloosa IA   515J IP HORIZON LLC 632   2025-10-24   
641-810 0 Oskaloosa IA   145J TERRA NOVA TELECOM INC. 632   2025-11-06   
641-810 1 Oskaloosa IA   515J IP HORIZON LLC 632   2025-10-24   
641-810 8 Oskaloosa IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2025-11-06   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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